Pressed Glass "Lenses"

[Arclight]

Hello all! I'm looking for (50) 4"ish round clear glass "lenses" that look like Fresnel lenses but are not as optically precise as real Fresnel. I've seen these kinds of jewels in older windows and they look like simple pressed medallions with a "target"-like ribbed design. I've attached an example photo I found from a lighting manufacturer that approximates what I need. Any help will be greatly appreciated. Thanks in advance - JAA

[glassheritage]

try Mosser glass in ohio ... they custome some prisms

http://www.mosserglass.com/index.htm